The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The USDA zone info for Albert Lea can be looked at to determine when to plant copperleaf.

Planting Calendar for Copperleaf

Frost tolerance for copperleaf:	Not tolerant of frost.
When to plant:	After the last frost has passed.

It's not a good idea to plant copperleaf until after the last frost because they require warm weather.

The earliest that you can plant copperleaf in Albert Lea is May. However, you really should wait until June if you don't want to take any chances.

The last month that you can plant copperleaf and expect a good harvest is probably August. Any later than that and your copperleaf may not have a chance to really do well. If you are starting your copperleaf indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

On average all chance of frost has passed is on May 15 in Albert Lea. In the coldest months of winter you should expect an average low temperature of -25°F.

Since the USDA zone info for Albert Lea is just an average the actual date of last frost will vary from year to year. Since half of the time in Albert Lea it frosts late in the year after May 15 be ready to protect your copperleaf in the event of a late frost.

USDA Zone Info for Albert Lea

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-25°F
Highest Expected Low	-20°F

This means that on a really cold year, the coldest it will get is -25°F. On most years you should be prepared to experience lows near -20°F.

Plants to Grow in Albert Lea

You may be interested in your other planting guides for Albert Lea.